Weather Report for September 19, 2009

The string of photometric nights comes to an unfortunate end. Clouds prevented opening the dome for the first half hour after the end of twilight. This delay prevented observations of a couple of far western targets (PKS1510-089 and PKS1502+106). The sky cleared well after opening, but then light scattered clouds intruded on most observations after 23:00 local time. Most available targets were observed during the night. The last hour of the night was lost to worsening cloud cover. Seeing was quite good at around 1.2 arcsec.